FYI : After a good many hours trying to figure out what the problem is with this I've ditched 7.2.6 and am proceeding with 7.2.5 + patch r1.

I tried the update from 7.1.4 to 7.2.6 twice on my U10.04-64 test machine with the same result both times. This is not a standard "zmmailboxdctl is not running" issue and nothing I've found in the Zimbra forums, or elsewhere, brought me any closer to having the mailbox running.

7.2.5 does not produce any of these errors and, so far, seems to work well.

I'm having a similar issue on 8.0.0
Woke up this morning with my Zimbra server "running", but not delivering any mail. The web gui is up, but when someone tries to send mail via the web gui, it hangs. Furthermore, the mail server isn't forwarding any mail either.

At this point, I'm kind of stuck, I'm not even sure what logs to check at this point to figure out why showq and proxymap are throwing warnings (assuming that's the issue). Any help would be very appreciated.

Finally, I'm running zimbra 8.0.0 on ubuntu 10.04, it's been working great for well over a year, so this is absolutely a new development.
Thank you for your time.